TY - JOUR
T1 - Molybdenum trioxide thin films doped with gold nanoparticles grown by a sequential methodology
T2 - Photochemical Metal-Organic Deposition (PMOD) and DC-magnetron sputtering
AU - Castillo, C.
AU - Buono-Core, G.
AU - MANZUR NAZAL, CECILIA CAROLINA
AU - Yutronic, N.
AU - Sierpe, R.
AU - Cabello, G.
AU - Chornik, B.
N1 - Funding Information:
This research was supported by FONDECYT, Chile (Project No.1110439) and Pontificia Universidad Cat?lica de Valpara?so (Project D.I. No. 125.756/11). C. Castillo thanks CONICYT, Chile for a doctoral fellowship and doctoral thesis support (Project No 24110020). We also thank Dr. Michael Noyong of Institut f?r Anorganische Chemie at Aachen, for preparing the SEM images.
Publisher Copyright:
© 2016, Sociedad Chilena de Quimica. All rights reserved.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2016
Y1 - 2016
N2 - Gold nanoparticles (AuNPs) were deposited by DC-magnetron sputtering onto molybdenum trioxide (MoO3) thin films grown by Photochemical Metal-Organic Deposition (PMOD) on Si(100) and borosilicate glass substrates. The chemical, optical and morphology properties of the films were studied by UV/Vis Spectroscopy, Scanning Electron Microscopy (SEM), X-Ray Photoelectron Spectroscopy (XPS), and X-Ray Diffraction (XRD). SEM revealed that AuNPs formed after 5 s of sputtering. AuNPs are spherical and have both an average diameter of 18 nm and a relatively narrow size distribution. As the deposition time increases, larger structures are formed by an aggregation of AuNPs. XPS studies of the AuNP/MoO3 films on Si(100) showed the presence of Mo(VI) and Mo(V), which indicated that the films were primarily non-stoichiometric molybdenum oxides. The occurrence of oxygen vacancies in the substrate play an important role to stabilize the AuNPs.
AB - Gold nanoparticles (AuNPs) were deposited by DC-magnetron sputtering onto molybdenum trioxide (MoO3) thin films grown by Photochemical Metal-Organic Deposition (PMOD) on Si(100) and borosilicate glass substrates. The chemical, optical and morphology properties of the films were studied by UV/Vis Spectroscopy, Scanning Electron Microscopy (SEM), X-Ray Photoelectron Spectroscopy (XPS), and X-Ray Diffraction (XRD). SEM revealed that AuNPs formed after 5 s of sputtering. AuNPs are spherical and have both an average diameter of 18 nm and a relatively narrow size distribution. As the deposition time increases, larger structures are formed by an aggregation of AuNPs. XPS studies of the AuNP/MoO3 films on Si(100) showed the presence of Mo(VI) and Mo(V), which indicated that the films were primarily non-stoichiometric molybdenum oxides. The occurrence of oxygen vacancies in the substrate play an important role to stabilize the AuNPs.
KW - A. nanostructures
KW - A. oxides
KW - A. thin films
KW - B. sputtering
KW - C. photoelectron spectroscopy
KW - C. x-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=84977083496&partnerID=8YFLogxK
U2 - 10.4067/S0717-97072016000100014
DO - 10.4067/S0717-97072016000100014
M3 - Article
AN - SCOPUS:84977083496
VL - 61
SP - 2816
EP - 2820
JO - Journal of the Chilean Chemical Society
JF - Journal of the Chilean Chemical Society
SN - 0717-9324
IS - 1
ER -